Geometric frustration in gadolinium gallium garnet: a Monte Carlo study

Journal Article · Tue Jun 15 00:00:00 EDT 1999 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.59478· OSTI ID:21208191

Petrenko, Oleg A; Paul, Don McK ^[1]

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1. University of Warwick, Department of Physics, Coventry CV4 7AL (United Kingdom)

We have studied the magnetic properties of the frustrated triangular antiferromagnet Gd{sub 3}Ga{sub 5}O{sub 12} (GGG) by means of classical Monte Carlo simulations. Low-temperature specific heat, magnetization, susceptibility, autocorrelation function and neutron scattering function have been calculated for several models including different types of magnetic interactions and with the presence of an external magnetic field. In order to reproduce the experimentally observed properties of GGG, the simulation model must include nearest neighbor exchange interactions and also dipolar forces. In zero field there is a tendency to form incommensurate short-range magnetic order around positions in reciprocal space where antiferromagnetic Bragg peaks appear in an applied magnetic field.

• OSTI ID: 21208191
• Journal Information: AIP Conference Proceedings, Vol. 479, Issue 1; Conference: Workshop on neutrons and numerical methods, Grenoble (France), 9-12 Dec 1998; Other Information: DOI: 10.1063/1.59478; (c) 1999 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETIC MATERIALS
ANTIFERROMAGNETISM
BRAGG CURVE
COMPUTERIZED SIMULATION
CRYSTAL STRUCTURE
EXCHANGE INTERACTIONS
GADOLINIUM COMPOUNDS
GALLIUM OXIDES
GARNETS
MAGNETIC FIELDS
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
MOLECULAR STRUCTURE
MONTE CARLO METHOD
NEUTRON DIFFRACTION
SPECIFIC HEAT